Malicious PDF — malware analysis report

Static analysis result for SHA-256 71ec9c03360fd3d8…

MALICIOUS

PDF

38.5 KB Created: 2020-08-19 06:17:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17be5febceb93649529666e545d50b66 SHA-1: f67634f09fc6350a733b5457b634e89bad50dfe4 SHA-256: 71ec9c03360fd3d8536aae6ac6fdc8b3fc02b69f54e06fa154ce4e5d502939bb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary redirector URL is identified as malicious. The document body, though heavily obfuscated, contains embedded URLs that are consistent with a phishing or malware distribution attempt, likely masquerading as a free download to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=boogie+woogie+english+song In PDF document text
    • http://lawubep.developinganaesthesia.org/uploads/1/3/2/6/132681513/vewop.pdfIn PDF document text
    • http://files.kamagraoz.com/uploads/1/3/1/6/131637658/7524531.pdfIn PDF document text
    • http://darija.playbyplaytheatre.org/uploads/1/3/1/4/131407278/1f7d5905.pdfIn PDF document text
    • http://files.livinmybliss.com/uploads/1/3/2/6/132683135/b7b3e3d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2095/files/calculus_analytic_geometry_larson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5300/6494/files/86622454870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/dusekuvofesib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7224/2342/files/3051274243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/quadratic_equation_form_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4528/9127/files/xakulatakuxefevofalegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/arabic_words_into_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5032/0543/files/33384748341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/concave_and_convex_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4071/9516/files/81754961990.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB8 4780 bytes
SHA-256: e576578b3348812e1bdb86cf7adba6cc816c56772a3d2d11aadfa670ebafd6d6
font_01_sfnt_off00005e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E15 14576 bytes
SHA-256: 26636ab7f32519b1996ecf1d4ed6d7afe6db1516169fd849700a1730918be928

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